From Tuesday, December 4, 2012 10:00 AM
– Tuesday, December 4, 2012 7:00 PM Pacific Time

Affected Services:
Wii U
Nintendo eShop
Nintendo 3DS
Nintendo eShop
Wii
Wii Shopping Channel
Nintendo DS
Nintendo DSi Shop

*During the emergency maintenance, parts of the affected services
may be intermittently unavailable.

I have no clue why this is down for so long. I guess we will wait and see.